| U.S. Geological Survey |
| National Oceanic and Atmospheric Administration |
| Tennessee Valley Authority |
| California Data Exchange Center |
| American Whitewater Virtual |
| Hydrometeorological Automated Data System |
| Colorado Division of Water Resources |
| Dreamflows |
| Washington Department of Ecology |
| Occoquan Watershed Monitoring Laboratory |
| Centre d'expertise hydrique Québec |
| Water Survey of Canada |
| USACE - Huntington District Water Management |
| Waterline |
| United Kingdom Enviroment Agency |
| Natural Resources Wales |
| Scottish Enviroment Protection Agency |
| PEGELONLINE |
| West Virginia DHSEM Flood Warning System |
| USACE - Baltimore District Water Management |
| Brookfield Renewable |
| Bundesamt für Umwelt BAFU - Abteilung Hydrologie |
| Comision Nacional del Agua |
| Hochwasser-Vorhersage-Zentrale Baden-Württemberg HVZ |
| Hydrographischen Dienstes Tirol |
| Hochwassernachrichtendienst Bayern |
| Hydrographischen Dienstes Salzburg |
| Hydrographischer Dienst Oberösterreich |
| Vigicrues |
| Hydrographischer Dienst - KÄRNTEN |
| What's Running Virtual |
| Dirección de General de Aguas |
| EPA HydroNet |
| Office of Public Works Ireland |
| Norges vassdrags- og energidirektorat |
| Vorarlberg Wasser Online |
| Hydrografischer Dienst Steiermark |
| Wasserstandsnachrichten und Hochwasserprognosen |
| Servizio Idro-Meteo-Clima di Arpae |
| Centro Funzionale Regione Toscana |
| WQData LIVE |
| Provincia Trento - Ufficio Dighe |
| Osservatorio Meteo Idrologico della Regione Liguria |
| NH Department of Enviromental Services |
| Stream Beam |